(1) The strength and hardness of pure magnesium polycrystals are not high, so pure magnesium cannot be directly used as a structural material, and pure magnesium is usually used to make magnesium alloys and other alloys.(2) Magnesium alloy is the most developed and applied potential green engineering material in the 21st centuryPerformance comparison between magnesium alloy and other alloy materialsMagnesium in aluminum, copper, zinc, zirconium, hafnium and other metals can form an alloy, which is an alloy with pure magnesium, its mechanical properties are better, is a good structural material. Although wrought magnesium alloy has good comprehensive performance, magnesium is a close-packed hexagonal lattice, which is difficult to plastically process and has high processing cost. Therefore, the amount of wrought magnesium alloy is much smaller than that of cast magnesium alloy. There are dozens of elements in the periodic table that form alloys with magnesium. Magnesium and iron, barium, potassium, sodium, etc. cannot form an alloy. Among the applied magnesium alloy strengthening elements, alloying elements can be classified into three categories according to the influence of alloying elements on the mechanical properties of binary magnesium alloys:1. The elements that increase the strength are: Al, Zn, Ag, Ce, Ga, Ni, Cu, Th.2. The elements that improve toughness are: Th, Ga, Zn, Ag, Ce, Ca, Al, Ni, Cu.3. Elements that enhance toughness and have little change in strength: Cd, Ti, Li.4. Elements that significantly increase strength and reduce toughness: Sn, Pd, Bi, Sb.Effect of impurity elements in magnesiumA. Most of the impurities contained in magnesium have an adverse effect on the mechanical properties of magnesium.B, MgO more than 0.1% will reduce the mechanical properties of magnesium.When the content of C and Na exceeds 0.01% or the content of K exceeds 0.03, the tensile strength and other mechanical properties of magnesium are greatly reduced.D, but at the same time containing Na up to 0.07% and containing K up to 0.01%, the strength of magnesium does not decrease, but only reduces its plasticity.High-purity magnesium alloy has corrosion resistance comparable to that of aluminum1. The magnesium alloy matrix is a close-packed hexagonal lattice. The magnesium is relatively active and the oxide film is loose. Therefore, the casting, plastic deformation and anti-corrosion processes are more complicated than the aluminum alloy.2. The corrosion resistance of high-purity magnesium alloys is comparable to or even lower than that of aluminum alloys. Therefore, the industrial production of high-purity magnesium alloys is an urgent problem to be solved in the large-scale application of magnesium alloys.

Magnesium alloy is called "21st century green engineering material", its density is small, light weight, specific strength, high specific rigidity, low heat capacity, fast solidification speed, good die casting and dimensional stability, good shock absorption. Easy to process, low scrap rate, very suitable for use in the production of automobiles. At the same time, it has a wide range of applications in aerospace, portable computers, mobile phones, electrical appliances, sports equipment and other fields.Casting use, working conditionsThe inner door of the car door is used to install related electric controls, door trim and so on.Typical product characteristics1. New magnesium alloy material, light weight and thin wall;2. The wall thickness is integrally formed by die-casting process, which reduces many assembly and welding processes;3. The strength can meet the requirements of use, the shock absorption performance is good, and the human body protection performance is better.Product key requirements1. The product has no large area of cold separation, no shortage of meat;2. The product meets the installation strength and rigidity, and the deformation amount is small.Product key difficultiesLarge size, thin wall, difficult to form, prone to insufficient casting, cold, deformation and other issues.Casting use, working conditionsThis bicycle integrated wheel is used for sharing bicycles. The bicycle wheels have long-term outdoor work and are exposed to the sun and rain. If the conventional wheel is used, the wheel is easily damaged, which requires a large number of workers to perform repairs, and the wheel has a single appearance and is beautiful. After using this wheel, the wheel is not easily damaged, no need for a large number of staff to repair, and the wheels are various in appearance and beautiful, which adds beauty to the city.Typical product characteristics1. The product is light in weight and good in strength;2. The appearance of the product is beautiful and can make a traditional appearance that cannot be made;3. It takes a long time to use and is not easy to break. Reduced after-sales service and greatly reduced after-sales personnel.Product key requirementsThe product requires a pressure shock test that does not crack under 600KG impact (three times at the same point).

Daily maintenance method of DZ-United magnesium alloy furnaceThe inside and outside of the furnace should be kept clean and tidy, and the iron oxide, carbon black and sand in the furnace should be regularly removed. Cleaning must be done when the power is turned off and the furnace temperature drops to room temperature. The silver paint on the surface of the shell must always be kept intact, preferably 1-2 times a year to reduce the heat loss of the magnesium alloy furnace body. It is forbidden to directly put the wet workpiece into the furnace. When loading, gently handle it, do not hit the brick and electric heating components. Do not force the oversized workpiece on the small stove to raise the temperature of the furnace so high that it burns the lining. When the furnace temperature is above 350 °C, the furnace door cannot be opened to cool down. It is strictly forbidden to use compressed air to cool the furnace. When the furnace temperature drops to 350 ° C, the shielding gas can be turned off and the entire power supply can be cut off. Always check whether the temperature automatic control system is normal, in order to prevent the temperature from running out of control and burn the furnace lining, the temperature control instrument and the thermocouple should be regularly corrected. Check the tightening of the terminal bolts regularly. The magnesium alloy ingots must be preheated to about 150-200 ° C each time. All tools for the molten magnesium alloy fluid must be dried and preheated to prevent moisture from entering the magnesium alloy fluid causing an explosion. In the event of a fire or immediately shut off the supply of water and electricity near the furnace, and use dry sand and D-type fire extinguishers to extinguish the fire, be sure to calm down and ensure personal safety. Emergency treatment of furnace leakage: When there is more magnesium liquid, some magnesium liquid can be shot, and then several pieces of cold material are quickly added. Allow the magnesium to solidify quickly. After the slag or after feeding, when a large amount of flame appears in the furnace, the gas protection flow should be increased, and a teaspoon of sulfur powder is added to the surface of the solution to provide temporary protection. If there is a sudden power outage, the protective gas will continue to pass into the crucible, always pay attention to the metal surface of the magnesium alloy furnace, such as the phenomenon of burning smoke, increase the amount of SF6, and add the appropriate amount of sulfur powder until the call or drop Until room temperature.

Fire safety of magnesium alloy1. The main disasters of molten magnesium alloy are:l Magnesium alloy on firel Magnesium liquid sputteringl Personnel burnsDo not use water to extinguish fireDo not use Class A, B, C fire extinguishers2. The correct extinguishing agent and its fire fighting procedures are as follows:(1) Covering agent for magnesium alloyl Usually fire in the furnace, use a covering agent to extinguish the fire in the initial stage of combustion or a small amount of burning.l When using, dry the covering agent with a spatula or other tools and sprinkle it on the fire.l Cut and throw the cover plastic bag directly to the fire, unless the fire is too large to be accessible.(2) dry dry sandl Dry or dry sand can be used to extinguish fires regardless of whether the fire has burned.l Make sure the dry sand is dry before use.l When using, use a shovel to spread the dry sand on the fire. The amount should be large and the coverage should be average.l For magnesium chips, when the slag is extinguished, not only should it be covered and should be tumbling, so the fire extinguishing effect will be good.(3) Metal fire extinguisher for magnesium alloy (D type fire extinguisher)l The metal fire extinguisher cannot completely extinguish the burning magnesium, and the fire is controlled.l Operate according to the method and procedure of using the fire extinguisher. The injection pressure should not be too large to blow away the burning magnesia to create a larger disaster range.l Because the fire cannot be completely extinguished, after the fire is controlled, the embers must be batched, and a small amount of shovel should be moved to other safe places for further treatment.After years of production practice and learning improvement, Dingzhengxin Magnesium Alloy Furnace has won the favor of a large number of customers at home and abroad with its excellent quality and perfect service.Professional magnesium alloy furnace provider!If the original article is reproduced, please indicate the source!